Quite a lot of leaves but these don't seem to be a problem. We had a great deal of rain last week that raised the stream level above the wheel - this left a lot of debris on the wheel - branches etc.. once cleared it worked fine again.
The wheel slats are made from Indian Hardwood pallets (everyone in the UK seems to be using Indian stone for driveways!) and I have treated them and the plywood with Thompsons water seal.
Pete.[ Parent ]